H209 First Law of Thermodynamics Flashcards
1
Q
Define specific heat capacity.
A
Specific heat capacity is the thermal energy per unit mass to raise the temperature of a substance by one degree.
2
Q
What is the formula for specific heat capacity?
A
c = Q/m(change in Temperature)
SI Unit: Jkg^-1K^-1
3
Q
Define specific latent heat.
A
Specific latent heat is thermal energy per unit mass to change the phase of a substance at constant temperature
To adapt the definition got specificnlatent heat of fusion/vaporisation, add the phrase “from solid phase to liquid phase/liquid phase to gas phase” after “change the phase of a substance”
4
Q
What is the formula for specific latent heat.
A
L = Q/M
SI Unit: Jkg^-1
L= specific latent heat, Q = quantity of thermal energy, m= mass
